JP2012035356A - Tightening management system for fastening components - Google Patents

Abstract

PROBLEM TO BE SOLVED: To surely reduce assembling cost of an aircraft by realizing tightening work of fastening components with high reliability by even an operator in an aircraft assembly process.SOLUTION: A tightening management system 1 manages the tightening status of fastening components such as screws that are used to tighten aircraft components in an aircraft assembly process. The tightening management system 1 includes: a manual torque wrench 2 that tightens a fastening component to a set torque, while applying a tightening torque, and also detects and sends information about the tightening torque applied to the fastening component; a marking pen 3 that marks fastening components for which the tightening work by the manual torque wrench 2 has been completed, detects the writing pressure at the marking and sends marking completion information; an information processing device 5 that determines the tightening status of fastening components based on the tightening torque information and the marking completion information; and a mobile information terminal 4 that notifies the operator of the determination results from the information processing device 5.

Description

  The present invention relates to a fastening part tightening management system for managing a fastening state of a fastening part such as a screw for fastening an aircraft component in an aircraft assembly process.

  In an aircraft assembly process, for example, a preset type manual torque wrench disclosed in Patent Document 1 is used to tighten each component of an aircraft with a screw. Occupy. The screw tightening work is usually performed by a pair of an operator and a supervisor.

  In this way, the screw tightening work included in the aircraft assembly process is not performed by one worker unlike the screw tightening work included in the automobile assembly process. The one set is performed for the following reason.

  That is, in the automobile assembly process, the automobile is assembled by a flow operation, and therefore the range in which the operator performs the screw tightening operation is limited to an extremely narrow range. Therefore, an electric torque wrench that is expected to be used in a narrow range is used for the screw tightening operation. This electric torque wrench is held so as to be able to be lifted and lowered in a state of being suspended from a ceiling, and power is supplied by wire to automatically tighten a screw. As a result, even one worker can properly perform the screw tightening operation relatively easily. On the other hand, in an aircraft assembly process, it is substantially impossible to assemble a large aircraft by a flow operation. Therefore, the assembly operation is performed from the beginning to the end at a predetermined location. Therefore, the range in which one worker performs the screw tightening work is far wider than that in the automobile assembly process. Also, aircraft assembly processes are typically performed in places where the ceiling is very high. Therefore, in an aircraft assembly process, not only is it difficult to hang an electric torque wrench from the ceiling, but even if it is suspended from the ceiling, an electric torque wrench that can be used is limited to a very narrow range. Screw tightening work cannot be performed efficiently. Therefore, in the aircraft assembly process, which is completely different from the automobile assembly process, a manual torque wrench that does not limit the work range is used, and the same work is duplicated by a pair of workers and command supervisors. This ensures that the screw tightening operation is reliable by preventing looseness due to insufficient tightening and overtightening.

JP 2000-246661 A

  However, there are many components that require tightening work with fastening parts such as bolts and nuts in addition to screws, and the assembly work requires a lot of personnel. If the screw tightening work is performed by a pair of two persons, the labor cost will double and the assembly cost of the aircraft will rise as compared to the case where only one worker tightens the fastening parts. There is a problem.

  Therefore, it is desired that only one worker performs a highly reliable screw tightening operation. However, in the assembly process of an aircraft, due to the difference from the automobile field as described above, one worker However, in reality, it is difficult to realize a fastening operation of a highly reliable fastening part.

  In view of the above circumstances, it is a technical object of the present invention to achieve a reliable fastening operation of fastening parts even by one worker in an aircraft assembly process and to reliably reduce the cost of aircraft assembly. And

  The present invention devised to solve the above problems is a fastening management system for fastening parts that manages the fastening state of fastening parts that fasten the components of the aircraft in the assembly process of the aircraft. While tightening the fastening part to the set torque and detecting and transmitting the tightening torque information acting on the fastening part, marking the fastening part that has been tightened by the manual torque wrench and A marking pen that detects the marking action and transmits marking completion information, an information processing device that determines a tightening state of a fastening part based on the tightening torque information and the marking completion information, and a determination by the information processing device It is characterized by having an information terminal for notifying the operator of the result. The aircraft assembly process here includes not only an assembly process at the time of manufacturing the aircraft, but also an assembly process when inspecting the manufactured aircraft. Further, the tightening torque information acting on the fastening part does not indicate the value of the tightening torque itself if there is a certain relationship with the tightening torque value (for example, the strain value acting on the torque wrench). May be.

  According to such a configuration, when an operator uses a manual torque wrench to tighten a fastening part, tightening torque information acting on the fastening part is transmitted from the torque wrench. In addition, when the operator marks the fastening part for which the tightening operation has been completed with the marking pen so that the fastening part for which the tightening operation has been completed can be visually confirmed, marking completion information is transmitted from the marking pen. Based on the tightening torque information and the marking completion information, the tightening state of the fastening component is determined. In other words, it is possible to determine whether or not the fastening part is tightened to an appropriate tightening torque based on the tightening torque information, and to mark the fastening part that has been properly tightened based on the marking completion information. Can be confirmed. And since the judgment result of such an information processing device is notified to the worker through the information terminal, even one worker can reliably tighten the fastening component to an appropriate tightening torque while preventing forgetting to tighten the fastening component. It can be tightened.

  In the above configuration, at least one of the tightening torque information and the marking completion information may be configured to be transmitted to the information processing apparatus via the information terminal.

  In this way, the transmission range of the manual torque wrench and the marking pen can be shortened, so that each transmitter can be reduced in size and weight. Therefore, it is possible to improve the workability of the tightening work of the tightening parts and the marking work with the marking pen.

  Said structure WHEREIN: It is preferable that the said information terminal is provided with the memory | storage means to memorize | store the information transmitted to the said information processing apparatus among the said tightening torque information transmitted to the said information processing apparatus and the said marking completion information. .

  In this way, since the tightening torque information and the marking completion information are stored in the storage means of the information terminal, even if the communication state between the information terminal and the information processing device once deteriorates, the communication between the two Since the tightening torque information and the marking completion information stored in the storage means after the state is improved can be transmitted, the corresponding information can be reliably transmitted to the information processing apparatus. Since the information terminal, the torque wrench, and the marking pen are carried by the operator, the situation where the communication state between them deteriorates causes the communication state between the information terminal and the information processing device to deteriorate. Therefore, tightening torque information and marking completion information are relayed and transmitted via the information terminal. In addition, from the viewpoint of more reliably managing the tightening state of the fastening part, both the tightening torque information and the marking completion information are transmitted to the information processing device via the information terminal, and both of the information is It is preferable to store in the storage means of the terminal.

  In the above configuration, the information terminal may include information input means for inputting identification information related to a tightening operation of a tightening part, and the identification information may be transmitted to the information processing apparatus.

  In this way, it is possible to manage the tightening state of the fastening component while accurately grasping the work actually performed by the worker.

  In this case, the information processing apparatus stores a storage unit that stores work procedure information of a tightening operation of the tightening part, and a determination unit that determines the suitability of the tightening operation by comparing the identification information with the work procedure information. And may be provided.

  In this way, it is possible to determine whether there is an error in the work procedure actually performed by the worker, and thus it is possible to cause the worker to perform the fastening work of the fastening part with an appropriate work procedure. Become. In other words, since there are many components in an aircraft, even if the tightening operation of each component is appropriate, if there is an error in the assembly procedure, it may not be able to assemble correctly to the end. Therefore, in order to prevent this, it is very effective to manage the fastening work of the fastening parts while collating with the work procedure by the operator as in the above-described configuration.

  As described above, according to the present invention, in the aircraft assembly process, it is possible for even one worker to realize a highly reliable fastening operation of fastening parts, thereby reliably reducing the cost of assembling the aircraft. Can be planned.

It is a conceptual diagram which shows the fastening management system of the fastening components which concerns on one Embodiment of this invention. It is a flowchart which shows the management procedure of the fastening operation | work of a fastening component by the fastening management system of a fastening component which concerns on this embodiment. It is a figure which shows the work condition of the assembly process of the aircraft to which the fastening management system of the fastening components which concerns on this embodiment is applied.

  Embodiments of the present invention will be described below with reference to the accompanying drawings.

  FIG. 1 is a diagram showing a schematic configuration of a fastening part tightening management system according to an embodiment of the present invention. As shown in the figure, the fastening part tightening management system 1 mainly includes a manual torque wrench 2, a marking pen 3, a personal digital assistant (PDA) 4 as an information terminal, and an information processing device 5. It is provided as a configuration. The manual torque wrench 2, the marking pen 3, and the portable information terminal 4 are carried by an operator 6 who performs fastening work of fastening parts as shown in FIG. Further, examples of the fastening parts include screws, bolts, nuts, and the like. Hereinafter, a case where the fastening parts are screws will be described as an example.

  The manual torque wrench 2 is a preset torque wrench capable of adjusting a set torque. The torque wrench 2 is provided with torque detecting means 2a for detecting tightening torque information acting on the screw when the screw is tightened, and the tightening torque information detected by the torque detecting means 2a is used. It is designed to transmit wirelessly. In this embodiment, the strain value acting on the torque wrench 2 is detected by a strain gauge or the like, and the strain value or a value obtained by converting the strain value into a torque value is used as the tightening torque information. ing.

  The marking pen 3 includes a writing pressure detection unit 3a that detects a writing pressure generated at the pen tip when marking a screw. When the writing pressure is detected by the writing pressure detection unit 3a, marking completion information is displayed. It is designed to transmit wirelessly. As the writing pressure detecting means 3a, for example, a device that detects distortion of the pen tip that occurs when the writing pressure is applied to the pen tip, or the pen tip is slightly in the main body when the writing pressure is applied to the pen tip. And a device that detects the movement of the pen tip.

  The portable information terminal 4 receives tightening torque information transmitted from the torque wrench 2 and marking completion information transmitted from the marking pen 3. And the portable information terminal 4 is provided with the memory 4a as a memory | storage means, and memorize | stores the tightening torque information and marking completion information which were received in this memory 4a, Then, these information are transmitted by radio | wireless. Yes. That is, the tightening torque information and the marking completion information are transmitted via the portable information terminal 4. In this embodiment, the portable information terminal 4 serves as an information input unit for inputting various types of identification information described in a display unit 4b for displaying predetermined information and a two-dimensional barcode (QR code). And a camera 4c. In this embodiment, as will be described later, (1) machine body identification information and (2) each work process are given as identification information relating to screw tightening work by the camera 4c of the portable information terminal 4. Work identification information, (3) component identification information, and (4) torque wrench identification information are read.

  The information processing device 5 receives the tightening torque information and the marking completion information transmitted from the portable information terminal 4. The information processing apparatus 5 includes a determination unit 5a that determines the state of the screw tightening operation based on the received tightening torque information and marking completion information, and a database 5b that stores various types of information. The determination result by the determination means 5 a is transmitted to the portable information terminal 4 and displayed on the display unit 4 b of the portable information terminal 4 to notify the worker 6. In addition, you may make it alert | report the determination result of the determination means 5a to the operator 6 from the portable information terminal 4 with a voice | voice (including the case where the display to the display part 4b is used together).

  Next, the management procedure of the fastening operation of the fastening part by the fastening part fastening management system configured as described above will be described.

  As shown in FIG. 2, in the fastening part tightening management system 1, first, in the first step S <b> 1, the worker 6 displays the worker identification information attached to his name tag or the like on the camera of the portable information terminal 4. Read in 4c. The read worker identification information is transmitted from the portable information terminal 4 to the information processing device 5. Then, the information processing device 5 reads detailed information (work procedure information) of work assigned to the worker 6 from the database 5b based on the worker identification information.

  Next, in step S <b> 2, the worker 6 reads the aircraft body identification information described in the work instruction sheet with the camera 4 c of the portable information terminal 4 in accordance with an instruction from the portable information terminal 4. The machine identification information thus read is transmitted from the portable information terminal 4 to the information processing apparatus 5. Thereafter, the process proceeds to step S3, where the determination unit 5a of the information processing apparatus 5 collates the machine body identification information with the detailed information of the work read out in step S1, and determines whether or not they match. As a result, if both match and it is determined that the aircraft identification information of the read aircraft is appropriate, information indicating that the information is correct from the information processing device 5 to the portable information terminal 4 is transmitted. An instruction to proceed to the next step S4 is notified to the person 6. Note that the notification method from the portable information terminal 4 to the worker 6 may be used in combination with the display and sound, or may use only sound, in addition to displaying on the display unit 4b of the portable information terminal 4. . In addition, the selection of the notification method is similarly applied to various notifications from the portable information terminal 4 to the worker 6 described below. On the other hand, when the determination unit 5a of the information processing apparatus 5 determines that the read machine identification information is inappropriate, the process proceeds to step S5, and the apparatus identification information is transferred from the information processing apparatus 5 to the portable information terminal 4. Information indicating improperness is transmitted, and error information is notified from the portable information terminal 4 to the worker 6. In addition, when it transfers to step S5 from step S3 in this way, the operator 6 needs to read the body identification information of the correct aircraft, in order to progress to the following step S4.

  In step S <b> 4, the worker 6 reads work identification information given for each work process described in the work instruction sheet with the camera 4 c of the portable information terminal 4 in accordance with an instruction from the portable information terminal 4. The read work identification information is transmitted from the portable information terminal 4 to the information processing apparatus 5. Thereafter, the process proceeds to step S6, and the determination means 5a of the information processing device 5 collates this work identification information with the detailed information of the work read out in step S1, and determines whether or not they match. As a result, if both match and it is determined that the read work identification information is appropriate, information indicating that the information processing apparatus 5 is appropriate is transmitted to the portable information terminal 4, and the portable information terminal 4 notifies the worker 6 of an instruction to proceed to the next step S7. On the other hand, when the determination means 5a of the information processing apparatus 5 determines that the read work identification information is inappropriate, the process proceeds to step S8, and the work identification information is transferred from the information processing apparatus 5 to the portable information terminal 4. Information indicating improperness is transmitted, and error information is notified from the portable information terminal 4 to the worker 6. When the process proceeds from step S6 to step S8 as described above, the worker 6 needs to read correct work identification information in order to proceed to the next step S7.

  In step S <b> 7, the worker 6 reads the part identification information attached to the components of the aircraft with the camera 4 c of the portable information terminal 4 in accordance with an instruction from the portable information terminal 4. The read component identification information is transmitted from the portable information terminal 4 to the information processing device 5. Thereafter, in step S9, the determination unit 5a of the information processing device 5 collates the component identification information with the detailed information of the work read in step S1, and determines whether or not they match. As a result, if both match and it is determined that the read component identification information is appropriate, information indicating that the information processing apparatus 5 is appropriate is transmitted to the portable information terminal 4, and the portable information terminal 4 notifies the worker 6 of an instruction to proceed to the next step S10. On the other hand, if the determination unit 5a of the information processing device 5 determines that the read component identification information is inappropriate, the process proceeds to step S11, and the component identification information is transferred from the information processing device 5 to the portable information terminal 4. Information indicating improperness is transmitted, and error information is notified from the portable information terminal 4 to the worker 6. In addition, when it transfers to step S11 from step S9 in this way, the operator 6 needs to read correct component identification information in order to progress to the following step S10.

  In step S10, the setting torque information of the torque wrench 2 corresponding to the component is transmitted from the information processing apparatus 5 to the portable information terminal 4, and the setting to be set in the torque wrench 2 for the operator 6 from the portable information terminal 4 The torque value is reported. At the same time, the process proceeds to step S12, where an instruction to select the torque wrench 2 is notified from the portable information terminal 4 to the worker 6, and the worker 6 can select an appropriate torque from several types of torque wrench 2. While selecting the torque wrench 2, the torque wrench identification information attached to the torque wrench 2 is read by the camera 4 c of the portable information terminal 4. The read torque wrench identification information is transmitted from the portable information terminal 4 to the information processing device 5.

  In step S13, the determination means 5a of the information processing device 5 collates the torque wrench identification information with the detailed work information read in step S1, and determines whether or not they match. More specifically, the database 5b of the information processing device 5 records information including a range in which the tightening torque of each torque wrench 2 can be applied (a settable torque setting range) and an examination deadline. When the set torque value notified to the torque wrench 2 indicated by the read torque wrench identification information includes the notified set torque value and the expiration date has not passed, the torque wrench identification information and It is determined that the detailed information of the work read in step S1 matches. As a result, when both match and it is determined that the read torque wrench identification information is appropriate, information indicating that the information is correct from the information processing device 5 to the portable information terminal 4 is transmitted. The terminal 4 notifies the worker 6 of an instruction to proceed to the next step S14. On the other hand, when the determination unit 5a of the information processing device 5 determines that the read torque wrench identification information is inappropriate, the process proceeds to step S15, and the information processing device 5 transmits the torque wrench identification information to the portable information terminal 4. Is transmitted to the operator 6, and error information is notified from the portable information terminal 4 to the worker 6. In addition, when it transfers to step S15 from step S13 in this way, the operator 6 needs to read correct torque wrench identification information in order to progress to the next step S14.

  In step S14, the portable information terminal 4 notifies the operator 6 of an instruction to set the set torque in the torque wrench 2 and execute the screw tightening operation with the torque wrench 2, and the operator 6 The screw tightening operation is executed according to the instructions. At this time, information such as a tightening location is also instructed to the worker 6 through the portable information terminal 4. While performing this tightening operation, as shown in FIG. 1, tightening torque information acting on the screw is detected by the torque detection means 2 a of the torque wrench 2, and this tightening torque information is stored in the portable information terminal 4. Are sequentially transmitted to the information processing apparatus 5.

  In step S16, the determination means 5a of the information processing device 5 determines whether or not the screw is tightened to the set torque value notified to the worker 6 based on the tightening torque information. Judge the suitability. As a result, when it is determined that the screw tightening operation has been properly completed, the information processing apparatus 5 transmits information indicating that it is appropriate to the portable information terminal 4, and the portable information terminal 4 sends the information to the worker 6. An instruction to proceed to the next step S17 is notified. On the other hand, when the determination means 5a of the information processing device 5 determines that the screw tightening operation is inappropriate based on the tightening torque information (for example, over torque or under torque), the process proceeds to step S18. Then, information indicating that the screw tightening work is inappropriate is transmitted from the information processing device 5 to the portable information terminal 4, and error information is notified from the portable information terminal 4 to the worker 6. In addition, when it transfers to step S18 from step S16 in this way, in order to advance to the following step S17, the operator 6 needs to re-tighten the screw and retighten the screw with an appropriate set torque. .

  In step S17, the portable information terminal 4 notifies the worker 6 of an instruction to mark the screw that has been properly tightened with the marking pen 3, and the worker 6 applies the screw to the screw according to the instruction. Mark. At this time, as shown in FIG. 1, the writing pressure applied to the pen tip is detected by the writing pressure detection means 3 a of the marking pen 3, and marking completion information is transmitted from the marking pen 3. This marking completion information is transmitted to the information processing apparatus 5 via the portable information terminal 4.

  In step S19, the determination means 5a of the portable information terminal 4 determines whether or not this marking completion information has been received. As a result, when it is determined that the marking completion information is properly received by the information processing apparatus 5, the process proceeds to step S20, and the determination means 5a of the information processing apparatus 5 causes the worker 6 to perform the next work. It is determined whether or not there is. On the other hand, if new tightening torque information is received between the time when it is determined that the screw tightening operation has been properly completed and the time when the marking completion information is received, the process proceeds to step S21. Information indicating that the marking completion information has not been received is transmitted from the device 5 to the portable information terminal 4, and error information is notified from the portable information terminal 4 to the worker 6. In addition, when it transfers to step S21 from step S19 in this way, in order to advance to the following step S20, the operator 6 needs to mark the screw which the fastening operation | work completed correctly with the marking pen 3 appropriately. .

  In step S20, as described above, the determination unit 5a of the information processing device 5 determines whether the worker 6 has the next operation. As a result, when it is determined that there is no next work, the process proceeds to step 22 to notify the worker 6 through the portable information terminal 4 that all work processes have been completed. On the other hand, if it is determined that there is a next work, the process further proceeds to step 23, where all the work included in one work process described in the work instruction sheet is performed by the determination means 5a of the information processing device 5. It is determined whether or not it has been completed. As a result, when it is determined that all work included in one work process is completed, the process returns to step S4 in order to instruct the worker 6 of another new work process. On the other hand, when it is determined that all the operations included in one work process are not completed, the process returns to step S10 to instruct the worker 6 to perform another work included in the same work process. Then, the above procedure is repeated until it is finally determined in step S20 that all the operations of the worker 6 have been completed.

  As shown in FIG. 3, when the fastening part tightening management system 1 according to this embodiment is applied to the actual assembly process of the aircraft 7, a plurality of workers 6 simultaneously perform screw tightening work. Done in parallel. Each worker 6 carries the torque wrench 2, the portable information terminal 4, the marking pen 3, and a work instruction (not shown). The information processing device 5 is housed in a management room 8 provided near the site of the assembly process (in the illustrated example, the second floor), and is connected to the portable information terminal 4 carried by each worker 6. Communication (radio communication) is performed using radio waves.

  As described above, according to the fastening part tightening management system 1 according to the present embodiment, when the operator 6 uses the torque wrench 2 to perform screw tightening work, the torque wrench 2 can tighten the tightening torque. Information is sent. When the operator 6 marks the screw for which the tightening operation has been completed with the marking pen 3 so that the screw for which the tightening operation has been completed can be visually confirmed, marking completion information is transmitted from the marking pen 3. Based on the tightening torque information and the marking completion information, the screw tightening state is determined. That is, it is possible to determine whether or not the screw is tightened to an appropriate tightening torque based on the tightening torque information, and to mark the screw that has been properly tightened based on the marking completion signal. It can be confirmed with certainty. And since the judgment result of such information processing apparatus 5 is alert | reported sequentially to the worker 6 through the portable information terminal 4, even the worker 6 alone can prevent forgetting screw tightening and to an appropriate tightening torque. Screws can be tightened. Therefore, in the assembling process of the aircraft 7, even one worker 6 can realize a highly reliable screw tightening operation and reliably reduce the assembly cost of the aircraft 7.

  In addition, since the tightening torque information and the marking completion information are stored in the memory 4a of the portable information terminal 4, even if the communication state between the portable information terminal 4 and the information processing device 5 once deteriorates, both Since the tightening torque information and the marking completion information stored in the memory 4a can be retransmitted after the communication state between the two is improved, both pieces of information can be reliably transmitted to the information processing apparatus 5. Therefore, the work status of the worker 6 can be more reliably managed by the information processing apparatus 5, which is very advantageous in improving the reliability of the screw tightening work.

  In addition, this invention is not limited to said embodiment, It can implement with a various form. For example, in the above embodiment, the tightening torque information detected by the torque wrench 2 and the marking completion information detected by the marking pen 3 are relayed to the information processing device 5 via the portable information terminal 4. However, the information may be transmitted directly from the torque wrench 2 and the marking pen 3 to the information processing device 5 without relaying the portable information terminal 4.

DESCRIPTION OF SYMBOLS 1 Tightening management system 2 Manual torque wrench 2a Torque detection means 3 Marking pen 3a Writing pressure detection means 4 Personal digital assistant 4a Memory 4b Display part 4c Camera 5 Information processing apparatus 5a Judgment means 5b Database 6 Worker

Claims (5)

A fastening part tightening management system for managing a fastening state of a fastening part for fastening an aircraft component in an aircraft assembly process,
A manual torque wrench that tightens a fastening part to a set torque while applying a tightening torque and detects and transmits tightening torque information acting on the fastening part;
A marking pen for marking a fastening part that has been tightened by the manual torque wrench, and detecting marking action and transmitting marking completion information;
An information processing device that determines a tightening state of a fastening part based on the tightening torque information and the marking completion information;
An fastening terminal tightening management system comprising: an information terminal for notifying an operator of a determination result by the information processing apparatus.   The tightening member tightening management system according to claim 1, wherein at least one of the tightening torque information and the marking completion information is transmitted to the information processing apparatus via the information terminal. .   The tightening according to claim 2, wherein the information terminal includes storage means for storing information transmitted to the information processing apparatus among the tightening torque information and the marking completion information transmitted to the information processing apparatus. Part tightening management system.   The said information terminal is provided with the information input means for inputting the identification information regarding the fastening operation | work of a fastening component, and transmits the said identification information to the said information processing apparatus. Tightening component tightening management system.   The information processing apparatus includes a storage unit that stores work procedure information of a tightening operation of a tightening part, and a determination unit that determines the suitability of the tightening operation by comparing the identification information with the work procedure information. The tightening management system for tightening parts according to claim 4.

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